The article is devoted to the study of influence asphalt-resin-paraffin deposits on temperature oil saturation by paraffin. As a result analysis and generalization published works statistical information, empirical dependences paraffin content asphaltenes, resins paraffin, were obtained, which identified for conditions Ural-Volga region Kazakhstan

A Ni(II) porphyrin functionalized with an alkyl carboxylic acid (3) has been synthesized to model the chemical behavior of the heaviest portion of petroleum, the asphaltenes. Specifically, porphyrin 3 is used in spectroscopic studies to probe aggregation with a second asphaltene model compound containing basic nitrogen (4), designed to mimic asphaltene behavior. NMR spectroscopy documents self-...

The basics of quantum mechanics and statistical thermodynamics were used to predict the potential energy and intermolecular forces of asphaltene molecules. The parameters associated with the chemical structure were also estimated for a specific asphaltene molecule to predict the Mie potential function. Based on the structural results, a new form of the Virial EOS with Peneloux correction wa...

Asphaltene adsorption on reservoir rock minerals causes wettability alteration and pore plugging which subsequently reduces crude oil production. Also, it has a negative effect the efficiency of production enhanced recovery operations. In this study, extracted asphaltenes two samples Iranian fields dolomite, quartz, magnetite was investigated in two-and three-phase systems both static dynamic flow...

Many geological processes from oil recovery to underground CO2 storage are affected by natural molecules adsorbed on rock surfaces. Yet, geochemical models tend overlook their formation and stability, let alone existence. With a suite of analytical techniques, we address this “missing-link” describe fundamental mechanisms for (i) the deposition surface-active in complex brines oils minerals (ii...

The thermodynamics of wax formation in crude oils is examined and additional insights obtained into the problem. We show that a correlation for cloud point, or wax apppearance temperature, obtained for pure-substance waxes may be extended to mixtures of hydrocarbons, thereby generalising the usefulness of the correlation. We apply the colligative equation for freezing point depression to quanti...